It's now expected to make an announcement to the Australian Securities Exchange tomorrow on the details behind a $6 billion finance deal it claims to have secured to build a deepwater port at Oakajee, just north of Geraldton.

Earlier this month, Padbury Mining announced it had secured funding to build the port and associated rail networks, but has since been criticised for failing to name its financial investors.

Padbury managing director Gary Stokes had previously refused to disclose any details of the investors, only saying they were Australian and wanted to remain anonymous.